Direct and Heterodyne Detection of Microwaves in a Metallic Single Wall Carbon Nanotube

Abstract

This letter reports measurements of microwave (up to 4.5 GHz) detection in metallic single-walled carbon nanotubes. The measured voltage responsivity was found to be 114 V/W at 77K. We also demonstrated heterodyne detection at 1 GHz. The detection mechanism can be explained based on standard microwave detector theory and the nonlinearity of the DC IV-curve. We discuss the possible causes of this nonlinearity. While the frequency response is limited by circuit parasitics in this measurement, we discuss evidence that indicates that the effect is much faster and that applications of carbon nanotubes as terahertz detectors are feasible.

References in corpus (7)

• Luttinger Liquid Behavior in Carbon Nanotubes
• High-Field Electrical Transport in Single-Wall Carbon Nanotubes
• Carbon Nanotubes as Schottky Barrier Transistors
• High-Field, Quasi-Ballistic Transport in Short Carbon Nanotubes
• High-Performance Carbon Nanotube Field-Effect Transistor with Tunable Polarities
• Electrical Contacts to Carbon Nanotubes Down to 1nm in Diameter
• Microwave Transport in Metallic Single-Walled Carbon Nanotubes

Cited by in corpus (4)

• Terahertz detection in single wall carbon nanotubes
• Terahertz detection mechanism and contact capacitance of individual metallic single-walled carbon nanotubes
• Bolometric and non-bolometric radio frequency detection in a metallic single-walled carbon nanotube
• Microwave-induced nonequilibrium temperature in a suspended carbon nanotube